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Welcome to Stonington, CT
Welcome to Stonington, CT
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Stonington Town Seal
Water Pollution Control Authority
Meetings held on the 4th Tuesday of each month at 6:30 pm in the Stonington Police Station meeting room
Contact TypeContact Information
Thomas P. Gilligan
Mailing Address:
152 Elm Street
Stonington, CT 06378
(860) 535-5065
(860) 535-1023
Monday - Friday
8:30AM - 4:00PM
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Water Pollution Control manages three individual sanitary sewer systems each having its own treatment plant  that serve the more populated regions of Stonington including the villages of Mystic, Old Mystic, Pawcatuck, and Stonington Borough. The remaining areas use individual on-site septic systems.

Customers pay for sewer use based upon water meter readings provided by the water companies. Bills are sent twice annually.

Contact Water Pollution Control concerning:

Sewer user accounts
New sewer connections
Hook-up charges
Connection fees
Sewer service areas
Sewage treatment practices
CT DEP required Special Permits
Charges and fees:

Sewer Use - $ 4.52 per 100 cubic feet (equals 748 gallons) as measured by water company meters.  Well charges are $119.00 for a single family residence and $178.50 for multi-family.
Minimum bill: $ 35.00 per six month period
Sewer connection applications - $ 150.00
Sewer hook-up charges - computed individually based upon type of use (residential, commercial, industrial)
property frontage
land area
assessed value of land (not including buildings)
Current Initiatives

        Wastewater Treatment Plant Improvements


Rehabilitate the Mystic Wastewater Treatment Plant to present day standards that include provisions for nitrogen removal while retaining treatment capacity that will accommodate projected sewage flows for more than 20 years into the future. Unique to this renovation is inclusion of a new process called BioMag™ that is capable of improving performance within the footprint of the existing structures. The project includes lesser enhancements at the Pawcatuck and Stonington Borough plants such as  replacing chlorination with UV for disinfection and improving nitrogen removal capability.


Stonington operates and is responsible for three separate sanitary sewer systems each with its own treatment plant. A draft “Wastewater Facilities Plan” for collection, treatment, and disposal for the next 20 years was completed in 2007 and filed with The Connecticut DEP (now DEEP). The DEP gave conceptual approval in January 2009.The Facilities Plan recommends upgrading and maintaining operation of all three treatment plants. Each is to be upgraded to achieve a high degree of nitrogen removal. The Mystic plant is the oldest and in the most immediate need of upgrading. It has been in service for more than 35 years and has not undergone a significant upgrade or renovation since its commissioning. Due to lower flows and loads at the Pawcatuck and Stonington Borough plants, the timing of these upgrades can be phased later to optimize funding opportunities and minimize cost impacts.

Project Budget:
        $ 18,325,000

Funding Source:
        General Obligation Bonds issued by the Town
  • authorized by special referendum on November 16, 2010

Water Pollution Control Authority

A Water Pollution Control Authority (WPCA) consisting of five citizens appointed by the Board of Selectmen supervises Stonington’s wastewater management systems.
Section 7-17 of the Town Charter establishes the local Water Pollution Control Authority
Connecticut General Statutes (CGS)
Sec. 7-246 Authorizes municipalities to establish a Water Pollution Control Authority.
Sec.7-247 Gives Water Pollution Control Authorities the authority to “…acquire, construct and operate (a) sewerage system…”

Stonington Town Hall 152 Elm St., Stonington, CT 06378

Monday-Friday, 8:30am - 4:00pm
Copyright 2011 Town of Stonington, CT. Website hosted by Virtual Towns & Schools, LLC